Midea MHC-V4W/D2N8-B Engineering Data

M thermal Mono
12 202005
Midea M thermal Mono Engineering Data Book
5.2.2 Mode set control
Figure 1-5.3: Application 2- Mode set control
Legend
1
Outdoor unit
17
Shut-off valve (Field supply)
3
User interface
18
Filling valve (Field supply)
5
Balance tank (Field supply)
19
Drainage valve (Field supply)
5.1
Automatic bleed valve
23
Collector/distributor (Field supply)
5.2
Drainage valve
24
Bypass valve (Field supply)
6
P_o: Zone A circulation pump (Field supply)
25
Hydraulic adapter box (Optional)
7
SV2: 3-way valve (Field supply)
RT 1…7
Low voltage room thermostat (Field supply)
13
Expansion vessel (Field supply)
RT8
High voltage room thermostat (Field supply )
15
Filter (Accessory)
FHL1…n
Floor heating loop (Field supply)
FCU1...n
Fan coil unit (Field supply)
Notes:
1. The example is just for application illustration; please confirm the exact installation method according to the installation manual.
Space heating
Cooling or heating mode is set via the room thermostat, water temperature is set on the user interface. 1) When any “CL”
of all the thermostats close, system will be set at cooling mode. 2) When any “HL” of all the thermostats close and all “CL”
open, system will be set at heating mode.
The circulation pumps operation
1) When the system is in cooling mode, which means any “CL” of all the thermostats closes, SV2(7) keeps OFF, P_o(6) starts
running;
2) When the system is in heating mode, which means one or more “HL” close and all “CL” open, SV2(7) keeps ON, P_o(6)
starts running.
Midea CAC Confidential

Midea MHC-V4W/D2N8-B Specifications

General

Brand	Midea
Model	MHC-V4W/D2N8-B
Category	Air Conditioner
Language	English